Emergency responders searched the Lehigh River for several hours tonight after receiving a report that a kayaker had gone missing on a span of the river near Canal Street Park in Northampton Borough.

The initial report went out about 5:45 p.m., but no one had been located as of about 8:30 p.m. and authorities were preparing to call off the search, according to a supervisor at the Northampton County emergency dispatch center.

The supervisor said Northampton Fire Department was handling the incident. Efforts to reach the department tonight weren’t successful.

Several other agencies including Northampton police also responded. It appeared that about half a dozen boats were involved in the search at one point.